Former mayor of South Bend, Indiana, leaves the race to take on Donald Trump after a poor showing in the South Carolina primary
Buttigieg, 38, a former two-term mayor of South Bend, Indiana, an Afghanistan war veteran and the first openly gay candidate to make a competitive run for the U.S. presidency, narrowly won the Iowa caucuses that kicked off the nominating race in February and finished a close second in New Hampshire.
But his early momentum from those rural, mostly white states did not translate into electoral success in the more diverse states of Nevada and South Carolina.
After finishing a distant third in the Nevada caucuses, Buttigieg came in fourth on Saturday in South Carolina, where he won support from just 3% of African-American voters.
The centrist Democrat's withdrawal from the race could help former Vice President Joe Biden, a fellow moderate who got a much-needed victory on Saturday and now is looking to wrest momentum from liberal front-runner Bernie Sanders in this week's 14-state Super Tuesday nominating contests.